diff --git a/LICENSE b/LICENSE
index 5899f87..d8a0a7b 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,5 +1,5 @@
 The MIT License (MIT)
-Copyright (c) 2009-2022 - Simon Conseil
+Copyright (c) 2009-2023 - Simon Conseil
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to
diff --git a/docs/conf.py b/docs/conf.py
index 4f786d9..5c425b9 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -34,7 +34,7 @@ master_doc = "index"
 
 # General information about the project.
 project = "Sigal"
-copyright = "2012-2020, Simon Conseil"
+copyright = "2012-2023, Simon Conseil"
 
 # The version info for the project you're documenting, acts as replacement for
 # |version| and |release|, also used in various other places throughout the
diff --git a/src/sigal/__init__.py b/src/sigal/__init__.py
index 3c1c6ee..1cdef94 100644
--- a/src/sigal/__init__.py
+++ b/src/sigal/__init__.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2009-2020 - Simon Conseil
+# Copyright (c) 2009-2023 - Simon Conseil
 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to
diff --git a/src/sigal/gallery.py b/src/sigal/gallery.py
index a093359..d449daf 100644
--- a/src/sigal/gallery.py
+++ b/src/sigal/gallery.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2009-2020 - Simon Conseil
+# Copyright (c) 2009-2023 - Simon Conseil
 # Copyright (c) 2013      - Christophe-Marie Duquesne
 # Copyright (c) 2014      - Jonas Kaufmann
 # Copyright (c) 2015      - François D.
diff --git a/src/sigal/image.py b/src/sigal/image.py
index c1031ed..0bc31d2 100644
--- a/src/sigal/image.py
+++ b/src/sigal/image.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2009-2020 - Simon Conseil
+# Copyright (c) 2009-2023 - Simon Conseil
 # Copyright (c) 2015 - François D.
 # Copyright (c) 2018 - Edwin Steele
 
diff --git a/src/sigal/log.py b/src/sigal/log.py
index 4ef678a..f55cb2d 100644
--- a/src/sigal/log.py
+++ b/src/sigal/log.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2013-2020 - Simon Conseil
+# Copyright (c) 2013-2023 - Simon Conseil
 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to
diff --git a/src/sigal/plugins/media_page.py b/src/sigal/plugins/media_page.py
index 1becd36..5234bd3 100644
--- a/src/sigal/plugins/media_page.py
+++ b/src/sigal/plugins/media_page.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2009-2020 - Simon Conseil
+# Copyright (c) 2009-2023 - Simon Conseil
 # Copyright (c)      2014 - Jamie Starke
 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
diff --git a/src/sigal/settings.py b/src/sigal/settings.py
index fbdf39c..60cee8b 100644
--- a/src/sigal/settings.py
+++ b/src/sigal/settings.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2009-2020 - Simon Conseil
+# Copyright (c) 2009-2023 - Simon Conseil
 # Copyright (c) 2013      - Christophe-Marie Duquesne
 # Copyright (c) 2017      - Mate Lakat
 # Copyright (c) 2021      - Keith Feldman
diff --git a/src/sigal/utils.py b/src/sigal/utils.py
index 0486fe1..0d41388 100644
--- a/src/sigal/utils.py
+++ b/src/sigal/utils.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2011-2020 - Simon Conseil
+# Copyright (c) 2011-2023 - Simon Conseil
 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to
diff --git a/src/sigal/video.py b/src/sigal/video.py
index 3699d43..482965a 100644
--- a/src/sigal/video.py
+++ b/src/sigal/video.py
@@ -1,5 +1,5 @@
 # Copyright (c)      2013 - Christophe-Marie Duquesne
-# Copyright (c) 2013-2020 - Simon Conseil
+# Copyright (c) 2013-2023 - Simon Conseil
 # Copyright (c)      2021 - Keith Feldman
 
 # Permission is hereby granted, free of charge, to any person obtaining a copy
diff --git a/src/sigal/writer.py b/src/sigal/writer.py
index c19ef4f..4a8dd9d 100644
--- a/src/sigal/writer.py
+++ b/src/sigal/writer.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2009-2020 - Simon Conseil
+# Copyright (c) 2009-2023 - Simon Conseil
 # Copyright (c)      2013 - Christophe-Marie Duquesne
 # Copyright (c)      2018 - Edwin Steele